Working towards Usable Forms on the Worldwide Web: Optimizing Multiple Selection Interface Elements

Table 2

Mean response time (s) for each section.

Section (Answers)	Checkbox	List box	𝑇	𝑑𝑓	𝑃
	M (SD)	M (SD)
1 (1–3)	17.22 (1.19)	25.69 (1.82)	4.403	98	< .001
2 (4–6)	16.39; (.93)	22.10 (1.58)	3.040	90.1	.003
3 (7–9)	15.89; (.87)	18.70 (1.36)	1.641	98	.104
4 (10–12)	15.01 (1.05)	18.32 (1.22)	1.935	98	.056
5 (13–15)	17.08 (1.21)	17.44 (1.19)	.154	98	.878